\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Descriptive statistics of relevant survey responses. \label{tab:desc-stat-survey}}
\begin{tabular}{l*{5}{c}}
\toprule
                    &\multicolumn{1}{c}{All}&\multicolumn{4}{c}{Population Group}               \\\cmidrule(lr){2-2}\cmidrule(lr){3-6}
                    &\multicolumn{1}{c}{\makecell{ \\ \\}}&\multicolumn{1}{c}{\makecell{Young \\ men}}&\multicolumn{1}{c}{\makecell{Young \\ women}}&\multicolumn{1}{c}{\makecell{Old \\ men}}&\multicolumn{1}{c}{\makecell{Old \\ women}}\\
\midrule
Change in planned contacts&        3.49&        3.81&        3.14&        3.55&        3.59\\
                    &      (3.59)&      (3.43)&      (3.42)&      (3.76)&      (4.10)\\
Change in planned hand cleaning effort&       11.46&       10.92&       11.54&       11.85&       12.06\\
                    &      (3.30)&      (3.36)&      (3.30)&      (2.96)&      (3.38)\\
\emph{Support for gov. regulation (in \%)}&            &            &            &            &            \\
\hspace{0.2cm} Are too much&        0.09&        0.12&        0.09&        0.06&        0.05\\
                    &      (0.28)&      (0.32)&      (0.29)&      (0.24)&      (0.21)\\
\hspace{0.2cm} Are appropriate&        0.31&        0.34&        0.29&        0.33&        0.27\\
                    &      (0.46)&      (0.47)&      (0.45)&      (0.47)&      (0.44)\\
\hspace{0.2cm} Are too little&        0.60&        0.54&        0.62&        0.61&        0.69\\
                    &      (0.49)&      (0.50)&      (0.49)&      (0.49)&      (0.46)\\
\emph{Change wrt. regulation (in \%)}&            &            &            &            &            \\
\hspace{0.2cm} Less than required&        0.07&        0.09&        0.06&        0.07&        0.03\\
                    &      (0.25)&      (0.29)&      (0.24)&      (0.25)&      (0.17)\\
\hspace{0.2cm} According to regulations&        0.30&        0.34&        0.32&        0.21&        0.24\\
                    &      (0.46)&      (0.47)&      (0.47)&      (0.41)&      (0.43)\\
\hspace{0.2cm} More than required&        0.63&        0.57&        0.62&        0.72&        0.73\\
                    &      (0.48)&      (0.50)&      (0.49)&      (0.45)&      (0.44)\\
\midrule
Observations        &        3448&        1118&        1297&         551&         482\\
\bottomrule
\multicolumn{6}{l}{\footnotesize \emph{Notes:} Table shows mean values and standard deviations in parentheses.}\\
\end{tabular}
\end{table}
